/*
 * Copyright 2006-2023 www.anyline.org
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.anyline.web.tag;

import org.anyline.entity.PageNaviConfig;
import org.anyline.util.AnylineConfig;
import org.anyline.util.BasicUtil;
import org.anyline.web.util.WebUtil;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyTagSupport;

/**
 * ajax形式分页
 * @author zh
 *
 */
public class Navi extends BodyTagSupport{
	private static final long serialVersionUID = 1L;
	private String url				;	// 数据来源
	private String param			;	// 参数收集函数
	private String container		;	// 返回内容显示容器
	private String body				;	// 返回内容显示容器class或id(如果body与page分开)
	private String cur				;   // 当前页
	private String page				;	// 返回内容显示容器class或id(如果body与page分开)
	private String bodyContainer	;	// 如果body与page分开(兼容上一版本)
	private String naviContainer	;	// 如果body与page分开(兼容上一版本)
	private String adapter = "ajax"	;	// 分页方式 ajax | html
	private String scroll			;   // 自动翻页时 监听的滚动事件源 默认window
	private String method = "post"	;
	private String id				;	// 一个页面内多个标签时需要id区分
	private String function			;	// 指定function后,需主动调用function后加载数据,查询条件发生变化时可调用function
	private String refresh			; 	// 刷新当前页的函数
	private String before			;	// 渲染之前调用
	private String after			;	// 渲染之后调用
	private Boolean intime = false	;	// 实时执行
	private Boolean auto = null		;	// 是否加载下一页内容(swap加载更多typ=1时 划屏到底部自动加载)
	private String callback			;	// 回调函数
	private String guide			;   // 加载更多文本提示

	private String empty			;	// 查询无数据显示内容
	private String over				;	// 最后一页提示
	private String style = AnylineConfig.DEFAULT_INSTANCE_KEY; 	// 样式标记对应anyline-navi.xml中的config.key
	private Boolean stat = true		;	// 是否显示统计
	private Boolean jump = true		;	// 是否显示跳转
	private Boolean vol = true		;   // 是否显示每页多少条(配置文件开启的情况下有效)
    private int delay = 0           ;   // 延迟执行时间

	private int type = 0			;	// 分页方式(0:下标 1:流式 2:根据浏览器状态 web:0,wap:1)
	private Integer max = null		;   // 最大显示到第几页(下标从1开始)
	private Integer cache = null	;	// 缓存夜间条件时间(秒)


	public int doStartTag() throws JspException {
		try{
			PageNaviConfig config = PageNaviConfig.getInstance(style);
			if(null == config) {
				config = new PageNaviConfig();
			}else{
				config.VAR_PAGE_MAX_PAGE = PageNaviConfig.DEFAULT_VAL_PAGE_MAX_PAGE;
			}
			StringBuilder builder = new StringBuilder();
			int idx = BasicUtil.parseInt((String)pageContext.getRequest().getAttribute("_anyline_navi_tag_idx"), 0);
			String flag = id;
			if(null == flag) {
				flag = idx+"";
			}
			String confId = config.KEY_ID_FLAG + flag;
			builder.append("<div id='_navi_border_"+flag+"'>");
			// 放到form里 实现后退时值不被重置
			builder.append("<form><input type='text' style='display:none;'/><input type='text' style='display:none;' id='_navi_cache_page_"+flag+"'><input type='text' style='display:none;' id='_navi_cache_vol_"+flag+"'></form>");
			if(idx == 0) {
				builder.append("<link rel=\"stylesheet\" href=\"" + config.STYLE_FILE_PATH + "\" type=\"text/css\"/>\n");
				builder.append("<script type=\"text/javascript\" src=\"" + config.SCRIPT_FILE_PATH + "\"></script>\n");
			}
			builder.append("<script>\n");

			if(type ==2) {
				if(WebUtil.isWap((HttpServletRequest)pageContext.getRequest())) {
					type = 1;
				}else{
					type = 0;
				}

			}
			builder.append("var " + confId + " = {");
			builder.append(config.KEY_ID_FLAG).append(":'").append(flag).append("',");
			if(BasicUtil.isNotEmpty(url)) {
				builder.append("url:'").append(url).append("',");
			}
			if(BasicUtil.isNotEmpty(param)) {
				String sign = "'";
				if(param.contains(")")) {
					// 构成成String 每次运行时解析实时value
					if(param.contains("'")) {
						sign = "\"";
					}
					builder.append("param:").append(sign).append(param).append(sign).append(",");
				}else{
					builder.append("param:").append(param).append(",");
				}
			}
			if(BasicUtil.isNotEmpty(container)) {
				builder.append("container:'").append(container).append("',");
			}
			body = (String)BasicUtil.nvl(body, bodyContainer);
			page = (String)BasicUtil.nvl(page, naviContainer);
			if(BasicUtil.isNotEmpty(body)) {
				builder.append("body:'").append(body).append("',");
				builder.append("bodyContainer:'").append(body).append("',");
			}
			if(BasicUtil.isNotEmpty(page)) {
				builder.append("page:'" ).append(page).append("',");
				builder.append("naviContainer:'" ).append(page).append("',");
			}
			if(BasicUtil.isNotEmpty(callback)) {
				builder.append("callback:" ).append(callback).append(",");
			}
			before = BasicUtil.nvl(before, config.EVENT_BEFORE,"").toString();
			if(BasicUtil.isNotEmpty(before)) {
				builder.append("before:" ).append(before).append(",");
			}
			after = BasicUtil.nvl(after, config.EVENT_AFTER,"").toString();
			if(BasicUtil.isNotEmpty(after)) {
				builder.append("after:" );
				if(after.contains(",")) {
					builder.append("'").append(after).append("',");
				}else {
					builder.append(after).append(",");
				}
			}
			if(null != guide) {
				builder.append("guide:'" ).append(guide).append("',");
			}
			if(BasicUtil.isNotEmpty(max)) {
				builder.append("max:" ).append(max).append(",");
			}
			builder.append("vol:").append(vol).append(",");
			if(null == cache) {
				cache = config.VAR_CACHE_CONDITION_SECOND;
			}
			builder.append("cache:").append(cache).append(",");
			if(null == auto) {
				auto = config.VAR_AUTO_LOAD;
			}

			builder.append("auto:").append(auto).append(",");
			builder.append("type:").append(type).append(",");
			builder.append("style:'").append(style).append("',");
			if(empty == null) {
				empty = config.STYLE_DATA_EMPTY;
			}
			if(over == null) {
				over = config.STYLE_PAGE_OVER;
			}
			if(null != empty) {
				builder.append("empty:'" ).append(empty).append("',");
			}
			if(null != over) {
				builder.append("over:'" ).append(over).append("',");
			}

			builder.append("jump:").append(jump).append(",");
			builder.append("stat:").append(stat).append(",");
			builder.append("adapter:'").append(adapter).append("'");
			builder.append("};\n");
			if(null == cur) {
				cur = pageContext.getRequest().getParameter(config.KEY_PAGE_NO);
			}
			int curPage = BasicUtil.parseInt(cur, 1);
			// 加载数据函数
			if(BasicUtil.isNotEmpty(function)) {
				// clear:清空上一页内容  hold:保持当前页
				builder.append("function ").append(function).append("(clear,hold) {\n");

				// 加载缓存
				if(null != cache) {
					builder.append("\tif(typeof _navi_load_cache === \"function\") {\n");
					builder.append("\t\t_navi_load_cache('").append(flag).append("',").append(confId).append(");\n");
					builder.append("\t}\n");
				}
				builder.append("\tif(clear) {\n\t\t").append(confId).append("['clear'] = 1;\n\t\t").append(confId).append("['flush'] = true;\n\t}\n");
				builder.append("\tvar _cur_page = ").append(curPage).append(";\n");
				builder.append("\tif(hold) {\n\t\t_cur_page = $('#_navi_cache_page_").append(flag).append("').val() || $('#hid_cur_page_").append(flag).append("').val() || _cur_page;\n\t\t_navi_go(_cur_page,"+confId+");\n\t}else{\n");
				builder.append("\t\t_navi_init(").append(confId).append(");\n\t}\n");
				builder.append("\tif(clear) {").append(confId).append("['clear'] = 0;}\n");
				builder.append("}\n");
				if(intime) {
				    // 延时执行,先读取当前第几页,每页多少条
					builder.append("setTimeout(function() {").append(function).append("(true,true)},").append(delay).append(");\n");
				}
			}else{
				builder.append("setTimeout(function() {_navi_init(").append(confId).append(")},").append(delay).append(");\n");
			}
			// 刷新当前页函数
			refresh = BasicUtil.nvl(refresh, config.EVENT_REFRESH,"").toString();
			if(BasicUtil.isNotEmpty(refresh)) {
				builder.append("function ").append(refresh).append("() {\n");
				builder.append("_navi_refresh(").append(confId).append(");\n");
				builder.append("}\n");
			}
			// 自动加载
			String scrollEventSrc = "window";
			if(BasicUtil.isNotEmpty(scroll)) {
				scrollEventSrc = "'" + scroll + "'";
			}
			builder.append("var scroll = $('"+scroll+"');\nif(scroll.length==0) {scroll = window}else{scroll=scroll[0]}\n");
			builder.append("$("+scrollEventSrc+").scroll(function() {_navi_auto_load(").append(confId).append(",scroll").append(");});\n");
			builder.append("</script>");
			builder.append("</div>");
			idx ++;
			pageContext.getRequest().setAttribute("_anyline_navi_tag_idx", idx + "");
			JspWriter out = pageContext.getOut();
			out.print(builder.toString());
		}catch(Exception e) {
			e.printStackTrace();
		}finally{
			release();
		}
		return EVAL_BODY_INCLUDE;
	}
	public int doEndTag() throws JspException {
		return EVAL_PAGE;
	}
	@Override
	public void release() {
		super.release();
		param 			= null	;	// 参数收集函数
		container 		= null	;	// 返回内容容器
		callback 		= null	;	// 回调函数
		body			= null	;
		page			= null	;
		bodyContainer 	= null	;	// 如果body与page分开
		naviContainer 	= null	;	// 如果body与page分开
		empty 			= null	;	// 空数据显示内容
		intime 			= false	;
		url 			= null	;
		id 				= null	;
		after			= null	;
		before			= null	;
		guide			= null	;
		function		= null	;
		refresh			= null	;
		type			= 0		;
		adapter = "ajax";
		stat			= true	;
		jump			= true	;
		auto			= null	;
		style			=  AnylineConfig.DEFAULT_INSTANCE_KEY	;
		scroll 			= null	;
		cur 			= null	;
		vol				= true	;
		delay           = 0     ;
		max				= null  ;
		cache			= null	;
	}

	public String getParam() {
		return param;
	}
	public void setParam(String param) {
		this.param = param;
	}
	public String getContainer() {
		return container;
	}
	public void setContainer(String container) {
		this.container = container;
	}

	public String getCallback() {
		return callback;
	}
	public void setCallback(String callback) {
		this.callback = callback;
	}

	public String getBodyContainer() {
		return bodyContainer;
	}
	public void setBodyContainer(String bodyContainer) {
		this.bodyContainer = bodyContainer;
	}
	public String getNaviContainer() {
		return naviContainer;
	}
	public void setNaviContainer(String naviContainer) {
		this.naviContainer = naviContainer;
	}
	public String getEmpty() {
		return empty;
	}
	public void setEmpty(String empty) {
		this.empty = empty;
	}
	public Boolean getIntime() {
		return intime;
	}
	public void setIntime(Boolean intime) {
		this.intime = intime;
	}
	public String getUrl() {
		return url;
	}
	public void setUrl(String url) {
		this.url = url;
	}
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getGuide() {
		return guide;
	}
	public void setGuide(String guide) {
		this.guide = guide;
	}
	public String getBefore() {
		return before;
	}
	public void setBefore(String before) {
		this.before = before;
	}
	public String getAfter() {
		return after;
	}
	public void setAfter(String after) {
		this.after = after;
	}
	public String getAdapter() {
		return adapter;
	}
	public void setAdapter(String adapter) {
		this.adapter = adapter;
	}
	public int getType() {
		return type;
	}
	public void setType(int type) {
		this.type = type;
	}
	public String getFunction() {
		return function;
	}
	public void setFunction(String function) {
		this.function = function;
	}
	public Boolean getStat() {
		return stat;
	}
	public void setStat(Boolean stat) {
		this.stat = stat;
	}
	public Boolean getJump() {
		return jump;
	}
	public void setJump(Boolean jump) {
		this.jump = jump;
	}
	public Boolean getAuto() {
		return auto;
	}
	public void setAuto(Boolean auto) {
		this.auto = auto;
	}
	public String getStyle() {
		return style;
	}
	public void setStyle(String style) {
		this.style = style;
	}
	public String getBody() {
		return body;
	}
	public void setBody(String body) {
		this.body = body;
	}
	public String getPage() {
		return page;
	}
	public void setPage(String page) {
		this.page = page;
	}
	public String getScroll() {
		return scroll;
	}
	public void setScroll(String scroll) {
		this.scroll = scroll;
	}
	public String getMethod() {
		return method;
	}
	public void setMethod(String method) {
		this.method = method;
	}
	public String getRefresh() {
		return refresh;
	}
	public void setRefresh(String refresh) {
		this.refresh = refresh;
	}
	public String getCur() {
		return cur;
	}
	public void setCur(String cur) {
		this.cur = cur;
	}
	public String getOver() {
		return over;
	}
	public void setOver(String over) {
		this.over = over;
	}
	public Boolean getVol() {
		return vol;
	}
	public void setVol(Boolean vol) {
		this.vol = vol;
	}

    public int getDelay() {
        return delay;
    }

	public Integer getMax() {
		return max;
	}

	public void setMax(Integer max) {
		this.max = max;
	}

	public void setDelay(int delay) {
        this.delay = delay;
    }
}
